Glass-cutter



(No Medel.)

, A. MoL. ROWLAND.

GLASS GUTTER. No. 396,600. I Patented Jan. 22, 1889.

M nimm: J

ATTORNEY.

UNITEn Sterns Artnr FFICE.

AA'TQEXANDun net. sown-tivi), or nnookLvN, Nrw vonn, AssieNoR To RICHARD N. oAKnAN, JR., or GREENFIELD, AND WARREN r, Drs- TIN, or 'rvnNnns Finis, .ui-issn(insnrrs GLASS-CUTTER.

SISECIFICATION forming part of Letters Patent No. 396,600, dated January 22, 1889.

Application filed August 27, 1888.

To all whom z't may cap/cern.-

Be it known thattI, ALEXANDER MOL. Row- LAND, of Brooklyn, in the county ot' Kings and State of New York, have invented a certain new and useful Improvement in Glass- Cutters, of which I declare the following to be a full, clear, and exactdescription, reference beinghad tothe accompanying drawings, forming part of this specification.

This invention relates to improvements 'in instruments for cutting window-glass, 8:0.; andthe invention consists of Ia rotary glasscutting instrument constructed in the manner and for the purpose herein 'particularly described, shown, and claimed.

` In ythe accompanying' sheet of drawings,

Figure l 1s a plan view ot the instrument as it appears when in nseg. 2, a side view of the same, partl7 inseotion in the plane .r Figl; Fig. 3, a face view ot' the cutterheadg- Fig. 4, a sectionv thereof in the plane f z/ y, Fig. 3; Fig. 5, a section in the plane vr r,

Fig. 4;' Fig. (5, an under side view of thebase.

Similar letters of reference indicate like parts 1n the severall views.

The purpose of this invention is to improve passed through a hole inthe base andjthen upset, so that the post is :freeto turn through. a complete revolution in either direction. ATo the under side of the base is cemented a fiat `rubberannulus, d, to keep the instrument from Slipping when in use. vThe upper end `of the post B isforinedinto n slightly-concave top,'b, and through the post in a horizontal direction is out a round hole', c, into which projects a 'set-screw, d, which is preferably somewhat inclined upward from the bindingvpost,y so that the base niay'fnotintert'ere with the turning of lthe set-screw by'fthe fingers;

construc- Serial No. 283,8?(5. (No model.)

and, besides, a longer thread is obtained in the vside of the bim'ling-post because ot' the invhole c in the binding-post passes a rod, C, one

end ot' which is provided with a shoulder, e, and a screw-eap j', and to this end of the rod is secured the cutter-head D. The head D consists ot' a disk cut from sheet-brass or other material, oil suitable-thickness, with a series of steel cutters Ned at intervals along its circumference. After the disk has been cut ont by a die it is placed in a lat-he and a groove, g, of proper width and depth is turned in its edge. rlhe cutters h are small knifeedged steel disks. They are turned and hardened and then pivoted between the sidesl of the groove g, as shown in Figs. 3, 4, and 5. Through the center of the cutter-head is made a hole, fz, of the proper size to receive the end of the rod C, and' in the tace of the cutterhead are stamped figures by which the steel cutters are designated. '.lhe cutter-head is clamped between'the shoulder e of the rod (l and the screw-cap f' on the end of the rod.

Then it is desired to use the instrumentabove described, the rod C is iixed by means of the set-screw (I in" the proper position to allow the cutter-head to describe the curve along which the glass is to be out, the base A is held against thev glass by a -iinger applied to the top otl the binding-post B, and the cutter-head is moved across the glass with one ot' the steel cut-ters pressed firmly against the surface of the glass. Assoon as'one of the steel cutters beeomcs worn ont. the cutterhead or the rod (f may be turned and another cutter brought into use till the supply is eN- hansted. Then thc old head can be replaced by a new one, when the instrument will be as serviceable as it was at the beginning. The figures on theiace ot` the cutter-head enable the operator to readily distinguish between those of the steel cutters that are` worn out and those that are still useful.

Having now described my invention, what l claim as new, and desire to secure by Letters Patent, is -p l. In an instrument for cutting glass, an adn 4. In a glass-cutting nstrunwnhthc MMM nation uf' the base A, binding-post 1%. F04 C.. and adjustable cutter-head D, provided wltba 15 sel-les of steel Gutters, 7l, us and for the purpose llcscrilxml. l

ALEX. MCL. l( \\v LAN I).

l). A. CARPENTER.

1 lll mwst-m11 nfl C. C. FIELD. l 

